mm-video: Use actual kernel headers for all builds

This reverts commit ba9e6c47df3b8408880b0591ebc0641a0c3d9eae.

Change-Id: Ic8e2febd74c77e119cd95ffd9a4cd9bdb239f7e4
Merge branch 'cm-10.1' of https://github.com/CyanogenMod/android_hardware_qcom_media into cm-10.1